Device and Method for Manufacturing an Electrode

Abstract

The disclosure relates to a method for manufacturing an electrode with a substrate and with a first dry film, wherein to form a first dry film, solvent-free dry film material is brought into a first nip formed between a first roller and a second roller. The first dry film formed in the first nip is conveyed roller-borne into a second nip formed between the second roller and a third roller and compressed there. For laminating, the compressed first dry film and the substrate are conveyed into a third nip formed between the third roller and a fourth roller, wherein the first dry film is conveyed roller-borne into the third nip. Moreover, the disclosure relates to a corresponding device for manufacturing the electrode.

What is claimed is: 
     
         1 . A method for manufacturing an electrode with a substrate and with a first dry film, comprising:
 to form a first dry film, bringing solvent-free dry film material into a first nip formed between a first roller and a second roller;   conveying the first dry film roller-borne into a second nip formed between the second roller and a third roller and compressing the first dry film therein; and   for lamination, conveying the compressed first dry film and the substrate into a third nip formed between the third roller and a fourth roller, wherein the first dry film is conveyed roller-borne into the third nip.   
     
     
         2 . The method of  claim 1 , comprising:
 to form a second dry film, bringing solvent-free dry film material into a fourth nip formed between a fifth roller and a sixth roller;   conveying the second dry film roller-borne into a fifth nip formed between the sixth roller and a seventh roller and compressing the second dry film therein; and   for joint lamination, conveying the compressed second dry film and the substrate laminated with the first dry film into a sixth nip formed between the seventh roller and an eighth roller, wherein the second dry film is conveyed roller-borne into the sixth nip.   
     
     
         3 . The method of  claim 1 , comprising:
 to form a second dry film, bringing solvent-free dry film material into a fourth nip formed between a fifth roller and a sixth roller;   conveying the second dry film roller-borne into a fifth nip formed between the sixth roller and the fourth roller and compressing the second dry film therein; and   for joint lamination, conveying the compressed second dry film, the substrate and the first dry film into the third nip, wherein the second dry film is conveyed roller-borne into the third nip.   
     
     
         4 . The method of  claim 1 , wherein the first dry film is compressed in the second nip, and/or the second dry film is compressed in the sixth nip, in each case to a density between 1.0 g/cm 3  and 4 g/cm 3 , in particular between 1.4 g/cm 3  and 3.7 g/cm 3 . 
     
     
         5 . The method of  claim 1 , wherein the first dry film is compressed in the second nip, and/or the second dry film is compressed in the sixth nip, in each case to a thickness between 10 μm and 200 μm, in particular between 40 μm and 120 μm. 
     
     
         6 . The method of  claim 1 , wherein the circumferential speed of the second roller is greater than the circumferential speed of the first roller, and/or in that the circumferential speed of the third roller is greater than the circumferential speed of the second roller. 
     
     
         7 . The method of  claim 1 , wherein the temperature of the second roller is adjusted to be greater than the temperature of the first roller, and/or the temperature of the third roller is greater than the temperature of the second roller. 
     
     
         8 . The method of  claim 1 , wherein the surface of the second roller has a greater roughness than the surface of the first roller, and/or the surface of the third roller has a greater roughness than the surface of the second roller. 
     
     
         9 . A device for manufacturing an electrode with a substrate and with a first dry film, having:
 a first roller and a second roller, wherein a first nip is formed between the first roller and the second roller;   a conveying apparatus for conveying solvent-free dry film material into the first nip;   a third roller, wherein a second nip is formed between the second roller and the third roller for compressing a first dry film formed in the first nip;   a fourth roller, wherein a third nip is formed between the third roller and the fourth roller; and   a feed for feeding the substrate into the third nip.   
     
     
         10 . The device of  claim 9 , wherein
 the line load and/or the gap width of the first nip, the second nip and/or the third nip is individually adjustable, and/or   the gap width is regulated in the first nip and/or in the second nip, and/or the line load is regulated in the third nip.   
     
     
         11 . The method of  claim 1 , wherein the substrate is foil-like. 
     
     
         12 . The method of  claim 2 , wherein the first dry film is compressed in the second nip, and/or the second dry film is compressed in the sixth nip, in each case to a density between 1.0 g/cm 3  and 4 g/cm 3 , in particular between 1.4 g/cm 3  and 3.7 g/cm 3 . 
     
     
         13 . The method of  claim 3 , wherein the first dry film is compressed in the second nip, and/or the second dry film is compressed in the sixth nip, in each case to a density between 1.0 g/cm 3  and 4 g/cm 3 , in particular between 1.4 g/cm 3  and 3.7 g/cm 3 . 
     
     
         14 . The method of  claim 2 , wherein the first dry film is compressed in the second nip, and/or the second dry film is compressed in the sixth nip, in each case to a thickness between 10 μm and 200 μm, in particular between 40 μm and 120 μm. 
     
     
         15 . The method of  claim 3 , wherein the first dry film is compressed in the second nip, and/or the second dry film is compressed in the sixth nip, in each case to a thickness between 10 μm and 200 μm, in particular between 40 μm and 120 μm. 
     
     
         16 . The method of  claim 4 , wherein the first dry film is compressed in the second nip, and/or the second dry film is compressed in the sixth nip, in each case to a thickness between 10 μm and 200 μm, in particular between 40 μm and 120 μm. 
     
     
         17 . The method of  claim 2 , wherein the circumferential speed of the second roller is greater than the circumferential speed of the first roller, and/or in that the circumferential speed of the third roller is greater than the circumferential speed of the second roller. 
     
     
         18 . The method of  claim 3 , wherein the circumferential speed of the second roller is greater than the circumferential speed of the first roller, and/or in that the circumferential speed of the third roller is greater than the circumferential speed of the second roller. 
     
     
         19 . The method of  claim 4 , wherein the circumferential speed of the second roller is greater than the circumferential speed of the first roller, and/or in that the circumferential speed of the third roller is greater than the circumferential speed of the second roller. 
     
     
         20 . The method of  claim 5 , wherein the circumferential speed of the second roller is greater than the circumferential speed of the first roller, and/or in that the circumferential speed of the third roller is greater than the circumferential speed of the second roller.